This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves – Quiz 19 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 19 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A method of broadcasting signal by changing amplitude of a wave is A) Magnetic electro. B) Electric magnitude. C) Amplitude modulation. D) Frequency modulation. Show Answer Correct Answer: C) Amplitude modulation. 2. The entire electromagnetic spectrum is divided into regions by A) Color. B) Speed. C) Wavelength. D) The way they are used. Show Answer Correct Answer: C) Wavelength. 3. Which type of waves can travel in space? A) Electromagnetic. B) Mechanical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Electromagnetic. 4. What is the part of a longitudinal wave where particles are spread apart? A) Compression. B) Rarefaction. C) Amplitude. D) Wavelength. Show Answer Correct Answer: B) Rarefaction. 5. Which type of electromagnetic wave is used in tanning beds? A) Infrared waves. B) Ultraviolet waves. C) X-rays. D) Gamma rays. Show Answer Correct Answer: B) Ultraviolet waves. 6. When scientists talk about white light, they areMOST likely referring to light that is A) A combination of all of the colors in the visible region of the electromagnetic spectrum. B) The unabsorbed refracted light produced by a black light. C) The narrow band corresponding to white light in the electromagnetic spectrum. D) A combination of all the types of electromagnetic radiation. Show Answer Correct Answer: A) A combination of all of the colors in the visible region of the electromagnetic spectrum. 7. In the electromagnetic spectrum, which wave has a shorter wavelength than visible light but longer than X-rays? A) Infrared. B) Ultraviolet. C) Gamma rays. D) Microwaves. Show Answer Correct Answer: B) Ultraviolet. 8. Sound waves is an example of mechanical waves. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. Which type of wave is used in light to see bloodstains in crime scenes? A) Blue visible light. B) X-ray. C) Ultraviolet radiation. D) Infrared radiation. Show Answer Correct Answer: C) Ultraviolet radiation. 10. Electromagnetic waves are not deflected by electric or magnetic fields. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 11. A mirage is a A) Copy of an object formed by reflected waves of light. B) A colorful Mosaic formed by diffraction. C) An upside down image formed by scattered waves of light. D) A distorted image formed by light waves entering a new medium. Show Answer Correct Answer: D) A distorted image formed by light waves entering a new medium. 12. Why is a large convex mirror used in convenience stores? A) It reflects wider area. B) It produces larger image. C) It forms virtual image. D) It produces clearer image. Show Answer Correct Answer: A) It reflects wider area. 13. A microwave oven emits radiation at a wavelength of 0.005 m. What is the frequency of this radiation? A) 6.67 x 10$^{-7}$ Hz. B) 2.00 Hz. C) 1.50 x 10$^{6}$ Hz. D) 6.00 x 10$^{10}$ Hz. Show Answer Correct Answer: D) 6.00 x 10$^{10}$ Hz. 14. Which electromagnetic waves have the highest energy? A) Gamma rays. B) Light waves. C) Radio waves. D) X-rays. Show Answer Correct Answer: A) Gamma rays. 15. The number of waves that pass by in a second is known as the wave's ..... A) Wavelength. B) Frequency. C) Speed. D) Amplitude. Show Answer Correct Answer: B) Frequency. 16. What type of waves are used on a TV remote control? A) Infrared rays. B) Radio waves. C) Ultraviolet. D) Visible light. Show Answer Correct Answer: A) Infrared rays. 17. What is the frequency of a photon whose energy is 3.4x10$^{-19}$J? A) 8.8x10$^{26}$ Hz. B) 5.1x10$^{14}$ Hz. C) 1.9x10$^{-15}$ Hz. D) 2.3x10$^{-52}$ Hz. Show Answer Correct Answer: B) 5.1x10$^{14}$ Hz. 18. Which electromagnetic wave is produced by the process within the atom and can be used to see through the skin and to the bones? A) Infrared radiation. B) X-rays. C) Ultraviolet radiation. D) Gamma rays. Show Answer Correct Answer: B) X-rays. 19. Which electromagnetic wave is usually given off by sources at high temperature? A) Radio waves. B) Infrared waves. C) Ultraviolet radiation. D) Visible light. Show Answer Correct Answer: D) Visible light. 20. If a light wave travels through the glass on the fish tank then into the water, what happens to the light wave? A) It bends when it enters a different medium. B) It will not be able to travel through the water. C) All of the light will bounce back from the glass. D) None of the above. Show Answer Correct Answer: A) It bends when it enters a different medium. 21. How much of the electromagnetic spectrum is made up of visible light? A) Only a small portion. B) Most of the spectrum. C) About half. D) None of the above. Show Answer Correct Answer: A) Only a small portion. 22. True or False:All electromagnetic waves are transverse. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 23. In order to see an object, light must be A) Transmitted into your skin. B) Reflected off the object and into your eyes. C) Reflected off the object then off the ground then into your eyes. D) Absorbed by your genetic material. Show Answer Correct Answer: B) Reflected off the object and into your eyes. 24. Which of the following is true for sound waves? A) They require a medium. B) They are unrelated to vibrations. C) They cannot travel through liquids. D) They can travel in a vacuum. Show Answer Correct Answer: A) They require a medium. 25. Gamma rays have wavelength in the range A) 10$^{-12}$ to 10$^{-14 }$m. B) 10$^{-18}$ to 10$^{-10}$m. C) 10$^{-4}$ to 10$^{-2}$ m. D) 10$^{-8}$ to 10$^{-4}$ m. Show Answer Correct Answer: A) 10$^{-12}$ to 10$^{-14 }$m. ← PreviousNext →Related QuizzesClass 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 1Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 2Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 3Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 4Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 5Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 6Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 7Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 8Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 9Class 12 Physics (Part I) Chapter 8 Electromagnetic Waves Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books